28610436 has 36 divisors (see below), whose sum is σ = 69801872. Its totient is φ = 9120144.

The previous prime is 28610431. The next prime is 28610503. The reversal of 28610436 is 63401682.

It is a super-2 number, since 2×28610436² = 1637114096220192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28610431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4095 + ... + 8601.

Almost surely, 2^28610436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28610436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34900936).

28610436 is an abundant number, since it is smaller than the sum of its proper divisors (41191436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28610436 is a wasteful number, since it uses less digits than its factorization.

28610436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4560 (or 4535 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 28610436 is about 5348.8724045354. The cubic root of 28610436 is about 305.8497703344.

The spelling of 28610436 in words is "twenty-eight million, six hundred ten thousand, four hundred thirty-six".